Posted: Mon Feb 23, 2015 23:05 Post subject: Is it possible to disable WMM power save on the R7000?
I made some post about issues with an iPad Air 2 and my Netgear R7000 Nighthawk running DD-WRT a while ago.
In the meantime with the new DD-WRT builds using the new driver WiFi runs pretty great on all of my devices except the iPad Air 2. Now I tend to believe this is some issue on the Air 2 side.
Anyway it is still not possible to stream TV from my Dreambox to the Air 2 using the Blackbox Pro app. The video will hang every 30s to 1min (an iPhone 6+ now works perfectly fine with the new DD-WRT firmwares with the new driver, as does an iPad Air 1).
I even had a second iPad Air 2 here for testing which showed the exact same issues (while all the time the 6+ was streaming at the same time without any issue).
Now after some more googling I found this thread and despite the thread being about the Air 1 I have a suspicion the issue here might be the same:
It's about the WMM power save feature with the possible solution of disabling it on the router.
I have made the following observations:
* If I turn off WMM completely in DD-WRT then the Air 2 streams just fine, video doesn't hang, however there are some other issues then and the speed in speed tests doesn't go over 30 mbps on average (with WMM enabled over 200 mbps).
* If I switch to A mode (which doesn't support WMM) then also everything is fine (but being in A mode of course also is very slow).
-> So it seems the issue is definitely related to WMM and this WMM power save feautre might really be the reason.
Now the best solution would be to try to turn off WMM power save and leave WMM generally on, but I don't see an option for that.
Is there some way to do that, maybe via command line, or am I just not seeing the option, maybe it is called differently?
wish i could help, but i fall into the #4 category from here
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=82079 _________________ reenignE esreveR
Resistance is NOT futile... It's Voltage divided by Current!
[size=9]
_.-:Curently Deployed Devices:-._
Loc_1.0: R6400 -- Kong PTB 35550M 03-28-2018
Loc_2.0: R6300v2 -- Kong PTB 35550M 03-28-2018
Loc_3.0: R6300v2 -- Kong PTB 35030M 02-19-2018
Loc_4.0: R6300v2 -- Kong PTB 28600M 12-31-2015 (Radios OFF) & 5 Ubiquity UniFi APs
Loc_4.1: E4200 -- BrainSlayer K2.6 30880
Others: too many others to list
Assumptions:
1. Everyone on the forum has read the relevant forum section announcements.
2. For Broadcom section we have ALL at least tried to understand the "Peacock" thread,HERE
Well I guess at least some people here should know.
Apparently some routers do have a setting for this so the question is why there is no setting for this in dd-wrt if dd-wrt is supposed to give more options than stock firmwares.
Or this is something that is only controlled by hardware nowadays and can't be changed with software on the routers that dd-wrt runs on!?
If there was some way to change this it would be worth a try seeing whether the issues with the iPad Air 2 can be circumvented with it.
I'd like to know if there has been on update on this topic?
It is possible to disable the power saving in WMM while leaving WMM itself enabled? _________________ Location (urban) - 1x Linksys EA8500 (AP wlan0 & wlan1 enabled)
1x Asus 68u (Repeater Bridge w/VAP) - wl0 disabled
1x Asus 87u (Client Bridge) - wl1 disabled
Joined: 21 Jan 2017 Posts: 1677 Location: Illinois Moderator
Posted: Thu Dec 03, 2020 17:28 Post subject:
The feature is known as U-APSD and you can turn it off...
That said, it's a hard baked chipset feature and not all chipsets comply/play nice with the setting. It's a crapshoot if you enable it if the client will comply or not...
You can certainly try playing with the setting, but YMMV.
On a lot of atheros, u-apsd is not implemented on the router end to work; though, I saw some recent SVN's about that feature...
Maybe another guru will chime in for BCM. _________________ FORUM RULES
